VALEO RAD
12-19-2012, 01:25 AM
#1
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clk500
VALEO RAD
I drive a 2005 CLK500 and I had a question in regards to the issues with the rads.
I've spent countless hours researching the issue with the coolant leaking into the tranny.
I have Valeo radiators and they were replaced in 2009. I dont know if they fixed/corrected the issue with the original radiators but im trying to figure out if I should leave the valeo radiators from 2009 or replace them with the BEHR radiator.
Ive been experiencing some issues with the transmission, harsh shift from 2-3 and harsh downshifts, especially when its cold. Im going to replace the 13-Pin connector this week but im unsure about the radiator issue and if coolant in the tranny can cause the shifting issues ive been experiencing.
I would greatly appreciate any help and thank you in advanced!!!
I've spent countless hours researching the issue with the coolant leaking into the tranny.
I have Valeo radiators and they were replaced in 2009. I dont know if they fixed/corrected the issue with the original radiators but im trying to figure out if I should leave the valeo radiators from 2009 or replace them with the BEHR radiator.
Ive been experiencing some issues with the transmission, harsh shift from 2-3 and harsh downshifts, especially when its cold. Im going to replace the 13-Pin connector this week but im unsure about the radiator issue and if coolant in the tranny can cause the shifting issues ive been experiencing.
I would greatly appreciate any help and thank you in advanced!!!
12-19-2012, 10:35 AM
#3
Did you replace the ATF?
When I replaced my ATF a few months ago, it made a world of difference of my transmission. The shifting was more smooth and it eliminated the idle vibrations.
I also replaced the 13-pin connector, it was $12.
When I replaced my ATF a few months ago, it made a world of difference of my transmission. The shifting was more smooth and it eliminated the idle vibrations.
I also replaced the 13-pin connector, it was $12.
12-19-2012, 12:17 PM
#4
MBworld Guru
Your MY2005 CLK500 should have the 722.9 7-speed, so you won't have the infamous leaking 13-pin connector like the 5-speeds. My advice is to change the fluid and filter immediately. I'm not sure of your mechanical abilities, but this can be a DIY if you have the right tools, are willing to invest in a few new ones, and have the ability to safely lift the car enough to work underneath it with the engine running. There is an excellent sticky on the forum for doing this.
Regardless of who does the fluid change, I also highly recommend a visit to the dealer to have them flash the latest TCU code. Mine started giving a harsh shift from 1-2 and also had the typical odd shifts and hunting on other gears inherent to the 722.9. After they updated the TCU code, it became very smooth. My transmission shifts buttery smooth now with very few "odd" shifts.
Regardless of who does the fluid change, I also highly recommend a visit to the dealer to have them flash the latest TCU code. Mine started giving a harsh shift from 1-2 and also had the typical odd shifts and hunting on other gears inherent to the 722.9. After they updated the TCU code, it became very smooth. My transmission shifts buttery smooth now with very few "odd" shifts.
12-21-2012, 12:26 PM
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clk500
Thanks for the help!
I took it to a dealer to replace the fluid. The upshifts became more smooth but the downshifts became more harsh.
Ill go back to them have them take a look at it! Every time I go there im taking out another mortgage on the house
I took it to a dealer to replace the fluid. The upshifts became more smooth but the downshifts became more harsh.
Ill go back to them have them take a look at it! Every time I go there im taking out another mortgage on the house
12-21-2012, 03:51 PM
#6
Super Moderator
After a fluid change the transmission will slowly adapt itself to the new fluid. Many believe you should do a re adaption with Star after a change. I've never in reality found that necessary.
One thing you must do is ensure that your TCU has the latest software flash as Rudeney says. The early software was know to allow harsh down change under certain conditions. Especially coming up to a stop on the second to first change. With the new software the vehicle comes to a halt in second & then changes to first for pull away under certain conditions.
One thing you must do is ensure that your TCU has the latest software flash as Rudeney says. The early software was know to allow harsh down change under certain conditions. Especially coming up to a stop on the second to first change. With the new software the vehicle comes to a halt in second & then changes to first for pull away under certain conditions.
